Analysis of HwOs2Ec.sys: vulnerable verdict, risk score 60/100. 2 YARA matches, 2/75 multi-engine detections. SHA256 b179e1ab6dc0b1ae. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver HwOs2Ec.sys and assigned a verdict of Vulnerable with a composite risk score of 60/100, indicating a known or likely vulnerability surface (60-79 band).
| Verdict | Vulnerable (60/100) |
| YARA matches | 2 |
| Multi-engine detections | 2 / 75 |
| File size | 42104 bytes |
| Code-signing signer | Symantec Time Stamping Services CA - G2 |
| Analyzed | 2026-09-06 |
| SHA256 | b179e1ab6dc0b1aee783adbcad4ad6bb75a8a64cb798f30c0dd2ee8aaf43e6de |
| SHA1 | 26c4a7b392d7e7bd7f0a2a758534e45c0d9a56ab |
| MD5 | bae1f127c4ff21d8fe45e2bbfc59c180 |
Version resource data embedded in the HwOs2Ec.sys PE header, as extracted by the analysis engine.
| File description | HwOs2Ec |
|---|---|
| Product | Huawei MateBook |
| Company | Huawei |
| Original filename | HwOs2Ec.sys |
| Internal name | HwOs2Ec |
| File version | 1.0.0.1 |
| Copyright | Copyright (C) 2016 |
Each component is scored 0-100 and then weighted into the composite. See the analysis methodology for the exact formula.
| Component | Sub-score |
|---|---|
| Multi-engine consensus | 0 / 100 |
| YARA signature matches | 10 / 100 |
| Dangerous kernel imports | 100 / 100 |
| IOCTL dispatch surface | 18 / 100 |
| Known-vulnerable corpus | 100 / 100 |
| Code-signing state | 80 / 100 |
| Packing and entropy | 0 / 100 |
| Dynamic behaviour | 0 / 100 |
| CVE cross-reference | 0 / 100 |
Kernel-mode APIs resolved from the Import Address Table of HwOs2Ec.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmMapLockedPagesSpecifyCache | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| ZwTerminateProcess | critical | Highly dangerous - potential for arbitrary code execution, memory corruption, or process termination |
| PsSetCreateProcessNotifyRoutine | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| ZwOpenProcess | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| MmGetSystemRoutineAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| ObOpenObjectByPointer | medium | Moderate risk - system modification capability |
| ZwQuerySystemInformation | medium | Moderate risk - system modification capability |
| KeBugCheckEx | medium | Moderate risk - system modification capability |
| ObReferenceObjectByHandle | medium | Moderate risk - system modification capability |
| ZwClose | low | Standard kernel API - generally benign |
| KeSetEvent | low | Standard kernel API - generally benign |
| ExAllocatePoolWithTag | low | Standard kernel API - generally benign |
| ExAllocatePool | low | Standard kernel API - generally benign |
| KeWaitForSingleObject | low | Standard kernel API - generally benign |
| DbgPrint | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
| ZwQueryValueKey | low | Standard kernel API - generally benign |
| IoCreateSymbolicLink | low | Standard kernel API - generally benign |
| ZwCreateFile | low | Standard kernel API - generally benign |
| IoCreateDevice | low | Standard kernel API - generally benign |
| IofCompleteRequest | low | Standard kernel API - generally benign |
| IoDeleteSymbolicLink | low | Standard kernel API - generally benign |
| IoDeleteDevice | low | Standard kernel API - generally benign |
| KeInitializeEvent | low | Standard kernel API - generally benign |
| ZwOpenKey | low | Standard kernel API - generally benign |
Control codes reachable through the driver dispatch routine. Codes tied to published exploit code are flagged, since they are the primary Bring Your Own Vulnerable Driver (BYOVD) entry points.
| Code | Severity | Transfer | Description |
|---|---|---|---|
| 0x008045C7 | high | METHOD_NEITHER | FILE_DEVICE_CUSTOM Function #369 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x00343B0D | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #3779 |
| 0x00224014 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #5 |
| 0x00340036 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #13 |
| 0x003402A4 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #169 |
Section layout and Shannon entropy. High entropy in a code section is a packing or encryption indicator.
| Section | Virtual size | Raw size | Entropy | Flags |
|---|---|---|---|---|
| .text | 0x2084 | 0x2200 | 6.08 | CODE, EXEC, READ |
| .rdata | 0x0994 | 0x0A00 | 4.23 | IDATA, READ |
| .data | 0x061C | 0x0200 | 0.3 | IDATA, READ, WRITE |
| .pdata | 0x033C | 0x0400 | 3.57 | IDATA, READ |
| .gfids | 0x0004 | 0x0200 | 0.02 | IDATA, READ |
| PAGE | 0x18EA | 0x1A00 | 6.09 | CODE, EXEC, READ |
| INIT | 0x092A | 0x0A00 | 5.21 | CODE, EXEC, READ, DISCARD |
| .rsrc | 0x0308 | 0x0400 | 2.59 | IDATA, READ, DISCARD |
| .reloc | 0x0014 | 0x0200 | 0.22 | IDATA, READ, DISCARD |
| Control Flow Guard | Not enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 55 / 100 |
| Rule | Severity | Detects |
|---|---|---|
| PUA_VULN_Driver_Huawei_Hwosec_Huaweimatebook_B179 | medium | Detects vulnerable driver mentioned in known-vulnerable driver corpus project using VersionInfo values from the PE header - HwOs2Ec7x64.sys. Investigate matches in context: expected filenames or stand... |
| SUSP_Callbacks | medium | Kernel callback registration |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1003.001 | OS Credential Dumping: LSASS Memory | Credential Access |
| T1014 | Rootkit | Defense Evasion |
| T1055.001 | Process Injection: DLL Injection | Defense Evasion |
| T1055.012 | Process Hollowing | Defense Evasion |
| T1068 | Exploitation for Privilege Escalation | Privilege Escalation |
| T1071 | Application Layer Protocol | Command and Control |
| T1112 | Modify Registry | Defense Evasion |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1489 | Service Stop | Impact |
| T1543.003 | Windows Service | Persistence |
| T1547.001 | Registry Run Keys | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1562.001 | Disable/Modify Tools | Defense Evasion |
| T1562.006 | Indicator Blocking | Defense Evasion |
| T1564.001 | Hidden Files and Directories | Defense Evasion |
| T1569.002 | Service Execution | Execution |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Symantec Time Stamping Services CA - G2 |
|---|---|
| Signer organisation | Symantec Corporation |
| Issuer | Thawte Timestamping CA |
| Serial | 7E93EBFB7CC64E59EA4B9A77D406FC3B |
| Valid from | 2012-12-21 00:00 UTC |
| Valid until | 2020-12-30 23:59 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status completed, 88 paths explored at a maximum depth of 88. Vulnerability classes reached: 1. Exploitable paths: 0.
Corpus match: this hash is present in the known-vulnerable driver corpus DriverShield cross-references during analysis, which is why the score carries a full weighting on that component.
Based on DriverShield static and dynamic analysis, HwOs2Ec.sys is flagged as vulnerable and is a potential Bring Your Own Vulnerable Driver (BYOVD) risk. Its composite risk score is 60/100 (verdict: vulnerable). Always validate findings independently before acting.
HwOs2Ec.sys has a DriverShield composite risk score of 60/100, placing it in the vulnerable verdict band. SHA256: b179e1ab6dc0b1aee783adbcad4ad6bb75a8a64cb798f30c0dd2ee8aaf43e6de.
HwOs2Ec.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Symantec Time Stamping Services CA - G2.
Related: Other drivers signed by Symantec Time Stamping Services CA - G2 · What an IOCTL dispatch code is · How YARA matching feeds the score · BYOVD research index · full driver database · CVE library · code signing atlas